feat(wms): 新增钢卷合同号自动填充功能

1. 在钢卷合并、分卷、打钢印、计划拆分、退火计划页面添加合同号自动拉取逻辑
2. 优化合同选择组件，补全不存在于列表的已选合同
3. 移除split.vue中冗余的注释代码

klp-ui/src/views/wms/coil/merge.vue

@@ -363,6 +363,7 @@
 
 <script>
 import { getMaterialCoil, mergeMaterialCoil } from '@/api/wms/coil';
+import { listCoilContractRel } from '@/api/wms/coilContractRel';
 import { listCoilAbnormal } from '@/api/wms/coilAbnormal';
 import { listPendingAction, getPendingAction } from '@/api/wms/pendingAction';
 import CoilSelector from '@/components/CoilSelector';
@@ -671,6 +672,14 @@ export default {
         this.targetCoil.itemType = data.itemType;
         this.targetCoil.itemId = data.itemId;
         this.targetCoil.warehouseId = data.warehouseId;
+
+        // 获取源卷绑定的合同号作为目标卷默认值
+        listCoilContractRel({ coilId }).then(res => {
+          const rows = res.rows || []
+          if (rows.length > 0 && rows[0].contractId) {
+            this.$set(this.targetCoil, 'contractId', rows[0].contractId)
+          }
+        })
       } catch (error) {
         this.$message.error('加载钢卷信息失败');
         console.error(error);